1. C h a p t e rC h a p t e r 1212 2. 12-2 12-1 12-2 12-3 12-4 12-5 12-6 12-7 3. 12-3 12-1 4. 12-4 5. 12-5 () 6. 12-6 7. 12-7 8. 12-8 (Overbooking) 9. 12-9 12-2 10. 12-10 11. 12-11 All you can eat buffet 12. 12-12 13. 12-13 14. 12-14 12-3 1. 2. 3. 4. 5. 15. 12-15 12-4 16. 12-16 12-1 17. 12-17 18. 12-18 12-5 19. 12-19 Trade-offCost down 20. 12-20 21. 12-21 22. 12-22 23. 12-23 24. 12-24 25. 12-25 26. 12-26 27. 12-27 28. 12-28 12-6 ? ? 29. 12-29 30. 12-30 (e-commerce) 31. 12-31 12-7